DBAL-178: Unknown column type requested #1340

doctrinebot opened this Issue Nov 2, 2011 · 7 comments

3 participants


Jira issue originally created by user fmaz008:

When I run doctrine:schema:create, doctrine throw the following exception:

Unknown column type requested.

( Note: their is 2 spaces between type and requested )

The problem with this error message is how much it's unspecific. Event with -v, I still have no clue about that type is wrong, and what file is concerned.
So basically, I have to manually look at all my mapping files, one by one.

Also note that doctrine:mapping:info return all OK.


Comment created by dswindle:

Ironically, this same issue has recently started happening for me as well. It just started randomly over the weekend. Same exact issue (with 2 spaces between type and requested). For me, it happens when using Doctrine\ORM\EntityManager->find() on a valid entity.

#0 /doctrine-2.1.2/Doctrine/DBAL/DBALException.php(81): Doctrine\DBAL\DBALException::unknownColumnType()
#1 /doctrine-2.1.2/Doctrine/DBAL/Types/Type.php(140): Doctrine\DBAL\DBALException::unknownColumnType()
#2 /doctrine-2.1.2/Doctrine/ORM/Internal/Hydration/SimpleObjectHydrator.php(84): Doctrine\DBAL\Types\Type::getType()
#3 /doctrine-2.1.2/Doctrine/ORM/Internal/Hydration/SimpleObjectHydrator.php(43): Doctrine\ORM\Internal\Hydration\SimpleObjectHydrator->_hydrateRow()
#4 /doctrine-2.1.2/Doctrine/ORM/Internal/Hydration/AbstractHydrator.php(99): Doctrine\ORM\Internal\Hydration\SimpleObjectHydrator->_hydrateAll()
#5 /doctrine-2.1.2/Doctrine/ORM/Persisters/BasicEntityPersister.php(581): Doctrine\ORM\Internal\Hydration\AbstractHydrator->hydrateAll()
#6 /doctrine-2.1.2/Doctrine/ORM/EntityRepository.php(130): Doctrine\ORM\Persisters\BasicEntityPersister->load()
#7 /doctrine-2.1.2/Doctrine/ORM/EntityManager.php(350): Doctrine\ORM\EntityRepository->find()


Comment created by gediminasm:

hi, seems like doctrine does not clean cache fully.

in my case I'm using APC cache
run: in php apc_clear_cache('user');

it should work fine now

running cache clearing commands, does not help.

doctrine:cache:clear-metadata         Clears all metadata cache for a entity manager
doctrine:cache:clear-query            Clears all query cache for a entity manager
doctrine:cache:clear-result           Clears result cache for a entity manager

Comment created by fmaz008:


@gediminas : I don't have the error anymore so I can't test, but it's nice if there's a solution to fix it.

However, this error is problematic as it's anti-verbose.
There's is no indication of a cache problem in the error message. It try to point out to a field, and that field is not even displayed in the error.
I hope someone will be able to fix the error so that's it become a useful error, like by following some sort of guideline:


I don't want to troll or anything, but as I'Ve started using doctrine2 with symfony2, the MAJOR problem I've encountered what bad error message that was leaving me lost. Often I had -v, find the file where the error occurred, look at the code, understand by myself what's wrong and attempt to fix it. This is counter-productive and really show that the exception message doesn't follow most error message guide line. For sure, we're not end-users, but we're "programmer-user" that use the system, and this "title" come with a knowledge that is not the same as we could expect of a core-developer, for example.

I hope this message was constructive.


Comment created by @beberlei:

Improved this error message alot and also changed some regarding reverse engineering of custom types (where this error often occured):

You can now implement Type#getMappedDatabaseTypes(AbstractPlatform $platform); on your custom type and return a list of database types that this doctrine type maps to.


Issue was closed with resolution "Fixed"


Comment created by almogbaku:

this bug is still happening to me.. but its works as excepted within schema:create and throw error on schema:update or schema:drop

I using doctrine with symfony

@beberlei beberlei was assigned by doctrinebot Dec 6, 2015
@doctrinebot doctrinebot added this to the 2.3 milestone Dec 6, 2015
@doctrinebot doctrinebot closed this Dec 6, 2015

Issue still persists on Symfony3 with Doctrine 2.5.

Uncaught PHP Exception Doctrine\DBAL\DBALException: "Unknown column type "" requested. Any Doctrine type that you use has to be registered with \Doctrine\DBAL\Types\Type::addType(). You can get a list of all the known types with \Doctrine\DBAL\Types\Type::getTypesMap(). If this error occurs during database introspection then you might have forgot to register all database types for a Doctrine Type. Use AbstractPlatform#registerDoctrineTypeMapping() or have your custom types implement Type#getMappedDatabaseTypes(). If the type name is empty you might have a problem with the cache or forgot some mapping information." at /var/www/mypoject/vendor/doctrine/dbal/lib/Doctrine/DBAL/DBALException.php line 228

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